asp.net服务器组件开发给System.Web.UI.WebControls.Label增加单击事件

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asp.net服务器组件开发给System.Web.UI.WebControls.Label增加单击事件

还有一个类是给Edit增加服务端可以相应的OnBlur事件



public class ClickableLabel : Label, IPostBackEventHandler
{
public event EventHandler Click;

protected void onClick(EventArgs e)
{
if (Click != null)
{
Click(this, e);
}
}

//When postback is caused by this control, raise the event
void IPostBackEventHandler.RaisePostBackEvent(string eventArgument)
{
onClick(new EventArgs());
}

//Add onclick attribute to cause a postback when Label is clicked
protected override void AddAttributesToRender(HtmlTextWriter writer)
{
base.AddAttributesToRender(writer);
writer.AddAttribute(HtmlTextWriterAttribute.Onclick, Page.GetPostBackEventReference(this, "onClick"));
}
}
public class MyTextBox : TextBox, IPostBackEventHandler
{
public event EventHandler Blur;
protected void OnBlur(EventArgs e)
{
if (Blur != null)
{
Blur(this, e);
}
}

void IPostBackEventHandler.RaisePostBackEvent(string eventArgument)
{
postBackEvent(eventArgument);
}

private void postBackEvent(string argument)
{
switch (argument)
{
case "onblur":
OnBlur(new EventArgs());
break;
}
}

protected override void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer)
{
base.AddAttributesToRender(writer);
writer.AddAttribute("onblur", Page.ClientScript.GetPostBackEventReference(this, "onblur"));
}

}